Machine tool



c. u. OESTER LEIN AND L. H. BLOOD. MACHINE TOOL.

APPLICATION FILED APR-9;1920.

' 1,405,622. Patented Feb. 7,1922

4 SHEETS-SHEET l- I I .d/w lesfl 0562 W C. D. OESTERLEIN AND L. H. BLOOD.

' MACHINE TOOL.

APPLICATION FILED APR. 9. 1920.

1,405,622. Patented Feb. 7, 1922.v

4 SHEETS-SHEET 2.

C. D. OESTERLEIN AND L. H. BLOOD.

' MACHINE TOOL.

APPLICATION FILED APR. 9, 1920.

1,405,622. Patented Feb. 7, 1922*.

4 swans-super a.

4 r IIHYQW I Elam f aha $960 flaw 6 'C. D. OESTERLEIN AND L. H. BLOOD.

MACHINE TOOL.

APPLICATION FILED APR. 9. 1920.

1,405,622. v Patented Feb. 7, 1922..

4 SHEETS-SHEET 4.

T i Q I g W x described whereby thesupply of air to the- A UNITED STATES PATENT OFFICE.

CHARLES D. OESTERLEIN AND'LOUIS H. BLOOD; OF GINCINNATI, OHIO, ASSIGNOBS TO THE OFSTERLEIN MACHINE (30., OF CINCINNATI, OHIO, A CORPORATION. OF OHIO.

MACHINE TOOL.

accompanylng drawings, forming a part of this specification;

)ur invention relates to improvements in machine tools and is'especially concerned with improvements in machine toolswhich comprise a turntable or face plate to which the work is secured, while being machined, by means of fixtures or devices operated by compressed air or other similar fluids.

The objects of our invention are First, to provide a "machine of the character described, comprising a rotatable turntable and means locatedeccentrically thereof and operated by air'pressure for securing the work thereto.

Second, to provide -a. machine of the'c'haracter described, with-*means for supplying air under pressure to such devices or fixtures and forcontrolling the supply of air to said devices for securing and releasing the work. Third, to provide means of the character devices or-fixtures is automatically controlled I to clamp and release the work.

Fourth, to provide means of the character described with handoperable or controlled devices for controlling the supply of air to the fixtures, independently of the automatic control.

Fifth, to provide a machine comprising a turn-table having a plurality of fixtures secured thereto and means such as described above for controlling the supply of air thereto, said means being so constructed that while a piece of work is held in one fixture and being machined, 'a finished piece of work can be removed'from theother fixture, andl l i I Sixth, to provide a machine of the charac- I ter described which is simple in construction,

economical to manufacture, reliable and easy to operate. I

Other objects will appear as this description progresses, reference being had to the accompanying drawings, in which- Figure 1 is a substantially central vertical Specification of LettersPaten tI Patented Feb. 7, 1922.

1920. Serial No. 372,430.

through our improved means for control-i linlIg the supply of air to the fixture.

igure 6 is asectional detail showing the hand. operable valve shown at the left hand side of Figure turned to a position 90 degrees in advance of the position of the valve shown in Figure 5, and I v Figures 7 and 8 are transverse sections taken 'on'lin'es 77 and 89-8, res ively, of Figure 5,showing certain detais of construction" of the air control apparatus and I the relativevpositions of the various valves;

Throughout'the several views, similar reference characters willb'e used for referring to similar parts. c i7 Referring for thepresent, to Figures 'l to 4; inclusive, wherein we have shown our invention in connection with a milling machine of well-known construction, the reference character 10 indicates a turn-table which is rotatably mounted on the inverted cone bearing 11 and is'driven by a worm,

(not shown), through the worm gear 12 secured to. the flange 13 of the turn-table in a" well-known manner. The reference character 14 indicates the head of the ram 15, both of which are reci procably mounted in the ram guides 16, one side only of which is shown. I

Bolted, or otherwise secured to the turn-' table are a pair of fiXtures 17 and18, each comprising a face plate 19, and an arbor or.

mandrel 20 mounted thereon, at the rear end of which is a face plate 21 against which the end of the work supported by the mandrel is adapted to be secured by the clamping dog 22. I 1 q a The clamping dog 22 is secured to one end 1 of the rock shaft 23. A lever'24 is secured to the otherend'ofthe rock shaft and is actuated to move the clamping dog into holding or releasing position by the piston rod 25,;

one end of which is pivotally secured to the free end of the lever 24, and the opposite end of which is provided with a piston 26, reciprocably mounted in the cylinder 27 It will be clear from the above description, that when the piston 26 is forced upwardly, the flange 28 of the work will be clamped against the face plate 21 and that when the piston-26B forced downwardly the dog 22- thecolumnj31 having the flange 32 at its lower end which may be bolted or otherwise secured to the turn-table.

Referring to Figure 5, it will be seen that the'distributor block is provided with a central tapered valve seat 33 in which is seated the tapered-plug 34 which is held on itsseat the compression spring 35 and the follower 36.: Since the distributor block 30 7 is to rotate about the valve 34, thedistributor block is secured to the turn-table in'such a manner that the valve seat willbe coaxial with the turn-table. For holding the valve'34. stationary,'we provide a lever 37, one, end of which secured to the stem'38 of the valve 34 and the otherend of which rests against the lower ram guide or arm as shown in Figure 1. From this description, it will 'be clearithat if the turn-table isrotated in a clockwise direction, the free end of the lever will be constantly maintainedin contact with the ram arm and the valve34 will be held stationary.

The valve 34 is provided with an air inlet passageway 39 shown in dotted outlinein Figure 5, which is adapted to be connected with an air supply pipe 40 as shown, in Figure 1, which may be supported by a bracket 41, secured to the ram arzni-Tw'o ports 42 andv43 formed in the valve 34,- radially and in opposite direction from each other, communicate at their inner ends with the inlet passageway 39. The outer ends of the ports 42 and 43 comprise annular grooves 42-and 43-.1espectively,.formed in the outer periphery, of the valve 84. On the opposite side of the valve fromthegrooves 42' and 43 are formed the annuar grooves 44 and 45, respectively, the groove 44 communicating with the atmosphere through the longitudinally extending groove 44' and the groove 45 communicating with the atmosphere through the groove 45. (See Figure 8.)

This last mentioned groove extends from the groove '45 to the lower end of the valve 34. The grooves 44 and 45 form means for venting the cylinders 27 in a manner which will presently be described,

Two pairs of ducts 4647 and 4849 are formed in the distributor block 30, and the inner ends of the ducts 46 and 48 lying in the plane of the grooves 42" and 44 and the In a similar manner, the valve 53 is provided with .the transverse ducts '56 and 57 forming a connecting means between the interrupted portions of the ducts 48-49, and providing a continuous passageway from the valve seat 33 to the outside of the distributor block. 3 i

The valves side with the two grooves 60 and 61 (see the left handside of Figure 5) and onthe other side with the groove62. (See the right hand side of Figure The groove 60 extends from a point slightly below the duct 46 to the end of the valve. and thus forms a vent to the atmosphere. The two grooves 61 and 62 are connected by a transverse duct 63 extending through the valve. It will, therefore, be seen than when the valveis turned to the position shown in Figure 6, it connects the inner portion of one of the upper ducts with the outer portion of oneofthe lower later on, the ifiow of air-to andyfrom the 51 and 53 are provided on one ducts, thereby' reversing, as will be described 7 cylinders. The valves 53 are held on their seats by the compression springs 65 and the followers 66. The upper ends of fthe stems 67. 1? the valves are provided with handles 68 by means of which the valves can be turned in their seats. It'will be noted that there is a space between 'all three of the valve stems and their followers, thereby providing means for permitting the escape of air from the vents 44' and .60.

Two pipes 70 and 71 respectively, connect the ducts 46and 47 with the upper and lower ends respectively of the cylinder 27 shown in the lower side of Figure 2 and two other ducts 72- and 73 respectively connect the ducts 48 and 49 respectively with the upper andlower ends of the cylinder 27 shown at the upper side of Figure 2. a

With the distributor block. and the valves in the position shown in Figure 5, air will enter the passageway 39 through the pipe 40 and part of the air will pass through the port 42, groove 42, ducts 48 and 56 and pipe 7 2 to the upper end of the cylinder 27 shown in the upper side of Figure 2 thereby ISO 7 munication with the grooves 44 and 43!, re-

forcing the piston in this cylinder downwardly and moving the dog 22 to its release. position therebypermitting the workman to place the work on'the mandrel 20,-, At the same time, air will pass throughthe passage- 7 way '39, port'4e'3, groove 43', ducts 47 and and pipe 71 to the lower end of the cylinder 27 shown at thelower side of' Fi re 2, thereby forcing the piston 26 upward y and actuating the dog 22 t hold the work on the chuck.

As the piston in the first mentioned cylin-o der' moves downwardly, the airinthe lower side-.of the cylinder will be displaced.

nections above described areiillustrated in Figures 7 and 8.- c a r f the turn table is then rotated, the ducts 4:6 and 47 'will beplaced 'into communication with the grooves 42' and 45,-respectively and the ducts48vand 49- will be placed: into comspectively, it-hereby reversing the connections to the two cylinders and causing the,

pistons therein to move in directions opposite to those in which they previously moved,

thus releasing the'finished work and clamp-; ing the new piece of Work onto the mandrel.

brought into cutting position by the rotation of the turn-table. 1 r a .It may sometimes, happen that the operator will desire torelease'orclamp the workon any given fixtureflindependently of the operation ofthese devices'as determined by the valvel34 and for this purposewe have provided the two valves'5lwand 53.

Considering for the time being the valve at the left hand side of Figure 5, it will be noted that when the valve is in; the position shown therein, air under pressure is transm ttedto thelower side of the cylinder 27 and air is ventedsfrom the upper side of thecylinder. If the valve is then turned to the position shown in Figure 6, air underpressure will be conducted to the lower side of cylinder will be vented, thereby reversing; the operation of the fixture, Either valve 51 or 53 can thus beused for reversing the the cylinder and the operator is thereby pro-.

vided with means whereby he can-control the operation of the fixtures 60.

the cylinderQTand-the upper side of the connections of the air supply to the endsof of the action of the valve 34.

preferred construction :of our invention,- it

is to be clearly understood that our; inven-. tion is not limited tothesedetails but his capable of'eother adaptations andemodificae depende y throughout the specification and claims,

wherever wense the term turn-table, this. term lSmIlOtwlllIllt-Ed to -the, construction shown in the drawings and described in the specification, but-includes the face plates of lathes and jother similar rotatable work su ort's.i a V aving thus describediour inventiomwhat We claim is:

'1. The combination with-ama chine','hava mg a turntable and. fixtures for. securing Work thereto, each fixture comprising a cyl inderi havinga piston 'slidable therein, of

meansfor alternately supplying air under pressure to opposite ends of said cylinders and venting the other end, comprising a distributor block secured to said turntable,- and provided with a valve seat'coaxial withsaid turntable, a'pair of pipes l'eadingfrom said listributor blockto the, opposite. ends of each of saidcylinders two pairsuof ducts formed in said distributor block for 'estab-V 'lishing' communicationv between 1 said valve seat and said; pipes, (a stationary valve coacting with said valve seat and/provided Wlthfln air -1nletpassageway;and ports Icommunicating therewithandvwiththe ducts-in said ,distri butorblock'for alternately con-' nect1n sa dair' inlet with the'opposite-ends -cyl nders,gas said turntable rotates,

of sai and handperable valves, ,one located intermediate theends of each pair of ducts for reversing the'directionof the flow of airto and from'said cylinders. 1 a a a 2. The combination with a machinefhaving a turntable and-means for securing work to said turntablecomprising a cylinderhavmg a piston-slidable therein, of means: for

alternately supplyingair under pressure tooppositecnds of said cylinde'rand venting the other end comprising a'distri'butor block having a valve seat therein coaxial with said turntable, and. a pair of dUCtSfOIlIlGd there-- in and communicating atone end with said seat, a pair of pipes respectively connecting the opposite ends of said ducts with opposite ends of said cyllnder, va stationary valve 7coacting with said valve seat and having an air inlet passageway,,and ports connected therewith for communieatingwithsaid valve ports While said .turntableiis rotating, and-a hand operable valve between the ends of said ducts for controlling theoperation of said securingmeans independently ofsaid first mentioned valve.

3-, The combination with a machinejfhaw' sing a turntablejand means for securing work; I v A tosaidturntable comprisingacylinder hav- 'While we have described the detailsofthe ing a piston'slidable thereimofmeans for t I alternately supplying'air under pressure to opposite ends-pf said cylinder and venting the other endcomprising' adistributor block 7 7 having a valve seat therein coaxial WithTSflid turntable, and a pairof ducts formed'therefor communicating with" said valve; ports, and another valve between the ends of said ducts for controlling the operation of said securing means. I

'4. The combination with a machine having a turntable andmeans for securing work to said turntable, comprising a cylinder having a piston slidable therein, of means for alternately supplying air under pressure to opposite ends of said cylinder and venting theother end comprising a distributor block having avalve seat therein coaxial with said turntable, and, apair of ducts formed therein and communicating at one end with said seat, a pair of pipesrespectively connecting the opposite ends of saidducts with opposite ends of said cylinders, a valve coacting with said valve seatrand having an air inlet passageway, and ports connected therewith for communicating with said valve ports.

5. The combinatlon with a machine having a turntable and eccentrically locate-d means for-securing work to said turntable comprisinga device'adapted to be operated by air under pressure, comprising a distributor block secured to said turntable, means for supplying air .tosaid distributor block comprising a stationary member located coaxially with said turntable, means for conducting air to andfrom said device. from and to saiddistributor block, and hand operable means on said distributor block for controlling the passage offai'r to andfr oni said device. y 1 i 6. The combination with a machine hav- 7 ing a turntable and eccentrically located means for securing work to said turntable comprising a device adaptedto be operated by air under pressure, comprising a dis tributor block secured to said turntable, means for supplying air to said distributor block, means forconducting air'to and from said device from and to said distributor block, and handoperable means on said distributor block for controlling the passage of I air'to and from said device.-

: a block, meansfor conducting air to and from said device from and to said distributor 66 device.

7. The combination with a machine hav-' ing a turntable and eccentrically located means for securing work to'said turntable comprising a device adapted to'be operated by air under pressurefcomprising a dis tributor 'block' secured to said turntable, means for supplying air to said distributor block, and hand operable means for con; trollingthepxissage of airto and from said 8. The combination with a: machine hav ing a turntable and {eccentrically located meansfor-securing workto said-turntable comprising a device adapted tobe' operated by air under pressure, comprising a dis- 70 tributor block secured to said I turntable, means for supplying air tosaid distributor block, and means for conducting airtogand from said device from andto said distributorblock. V

9. The combination witha machine having a turntable and means for securing work to said turntable comprising a device adapted to be operated by air under pres sure and comprising a distributor block cured to saidturntable, means for supplying air to said distributor block and means for conducting air-to and from said device from and'to' said distributorblock 10. The combination with a machine having a turntable, of means located eccentricall'y of said'turntable for securing work thereto comprising a device adapted to be operated by air pressure, and means for supplying air to and venting air from said device comprising a 'member' coaxial with said turntable and havingmeans controlled by the movement; of said-turntable for-first supplying air to said device and then venting said device. I

11. The co b' nation-witli a machine having a; turntable, of means located eccen trically of said turntable for secur'ing work thereto-comprising a device adapted to be operated by air-"pressure and "means: for supplying air to and venting air from said device comprising a memberhaving means controlled by the movement of said turntable for first supplying air-to said device and then 'venting'said device. a i

12. The combination with a machine having a turntable,- of means located eccentrically of said turntable forsecuring' work V thereto comprising a device adapted'to be operated by air pressure, and means for supplyingair to and venting air from said device comprising a member, having means for first supplying air to said device and then venting said device.

' 13. The combination with amachine hav-i 1 1 5 ing a turntable, of means located eccen-c trically thereof for s'ecuring'work thereto and comprising means'to be operated by air under pressure, of 'means located cen- Vtrally of said turntable for supplying air to said devicewhile said turntable is mov;

ing, 'means controlled by the movement of said turntable for" controlling thB'flOW of air to and from said device, and other means for controlling the flow of air independently of saidfirst named'controllin'g means.

14. The, combination. with a machine having a turntable, of means located eccentrically thereof for securing work thereto a and comprising means to be operated by air under pressure, of means for supplying air to said device while sald turntable is moving, means controlled by the movement of said turntable for controlling the flow of air to and from said device and other means for controlling the flow of air.

15. The combination with a machine having a turntable, of means located eccentrically thereof for securing work thereto and comprising means to be operated by air under pressure, of means for supplying air to said device while said turntable is moving, and means controlled by the movement of said turntable for controlling the flow of air to and from said device.

16. The combination with a machine having a turntable, of means located eccentrically thereof for securing work thereto and comprising means to be operatedby air under pressure, of means for supplying air to said device, and means controlled by the movement of said turntable for controlling the flow of air to and from said device.

17. The combination with a machine comprising a turntable, of means located. eccentrically thereof for securing Work thereto, comprising an air-operated device, means for supplying air thereto'while said turntable is moving, and means for controlling the flow of air.

18. The combination with a machine comprising a turntable, of means for securing 7 work thereto, comprising an air-operated device, means for supplying air thereto while said turntable is moving, and means for controlling the flow of air.

19. The combination with a machine comprising a turntable, of means for securing Work thereto, comprising an air-operated device, means for supplying air thereto, and

means for controlling the flow of air.

20. The combination with a machine having a turntable, of a pair of means for securing wiork thereto, each of said means being located eccentrically of said turntable and comprising an air-operated device, means for supplying air to said devices and means controlled by the movement of said turntable for controlling thesupply of air tosaid devices to lock the work in one of said work securing means and release the Work in the other work securing means.

i 21. The combination with a machine having a turntable, of a pair of means for securing work thereto, and comprising an airoperated device, means for supplying air to said devices, and means controlled by the movement of said turntable for controlling the supply of air to said devices to lock 4 the work in one of said work securing means and release the work in the other work securing means.

22. The combination with a machine havit ing a turntable, of a pair of means for securingwork thereto, and comprising an airoperated device, means for supplying air to said devices and means for controlllng the supply of air to said devices to lock the work in one of said work securing means and release the work in the other work securing means.

In witness whereof, we hereunto subscribe our names this 30th day of March, 1920.

CHAS. D. OESTERLEIN. LOUIS H. BLOOD.

Witnesses:

CHAS. W. SCHILLING, ERWIN H. SOHROEDER. 

